Add API for entity callbacks/change before save/after load [DATACMNS-1467]

[spring-projects-issues]

Mark Paluch opened DATACMNS-1467 and commented

We should provide an Entity Callback API that allows store modules to issue calls before saving/after loading with the intent to modify the entity. A typical use case for before save is auditing that updates auditing metadata.

Today, auditing and other entity mutations typically happen in place and this is a limitation when working with immutable entity types

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Issue Links:

• DATACASS-618 Add support for entity updates before save using EntityCallbacks
  ("is depended on by")
• DATAMONGO-2261 Use Entity Callback API for before-save operations
  ("is depended on by")
• DATACMNS-1231 Add infrastructure for reactive auditing
  ("is depended on by")
• DATAJDBC-393 Use the new EntityCallback infrastructure

Referenced from: pull request #332